How do scientist measure mass?

Answer 1

m=e/(c^2)

In a more practical and day to day sense, they use balances, either top pan or analytical balances. These balances are calibrated using a specific set of weights.

Answer 2

Scientists measure mass using a tool called a balance or a scale. The object being measured is placed on the balance or scale, and the reading indicates the mass of the object. Mass is typically measured in units such as grams (g) or kilograms (kg).